#include <iostream>
using namespace std;
int cong(int a, int  b){
	return a +b;
}
double cong(double a, double b){
	return a + b ;
}
char cong(char a, char b){
	return a + b;
}
int main(){
	cout<<cong(3,4);
	cout<<endl<<cong(2.5,4.5);
}


